Answers

2015-12-04T01:01:25+08:00
2Cu + S --> Cu2S

identify the limiting reagent.

use its mass and relate it to the equation (stoichiometry) by knowing the number of moles in the above balanced equation.

get the molar mass of Cu2S

compute for it using dimensional analysis. im sorry i dont have a pen right now. just message me if you have more questions
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